19961820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110899}}^1$

素因数の和:110914

約数の個数: 36

約数和(自身を含む): 60551400

約数和(自身を除く): 40589580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110899, 221798, 332697, 443596, 554495, 665394, 998091, 1108990, 1330788, 1663485, 1996182, 2217980, 3326970, 3992364, 4990455, 6653940, 9980910, 19961820]

約数ペア:

[(1, 19961820), (2, 9980910), (3, 6653940), (4, 4990455), (5, 3992364), (6, 3326970), (9, 2217980), (10, 1996182), (12, 1663485), (15, 1330788), (18, 1108990), (20, 998091), (30, 665394), (36, 554495), (45, 443596), (60, 332697), (90, 221798), (180, 110899)]